p. 5 - 19 GEOSTROPHIC CURRENTS AND REAL CIRCULATION ON THE ROMANIAN SHELF OF THE BLACK SEA Vasile Diaconu and Ion Nae Romanian Marine Research Institute Constantza Abstract The geostrophic currents on the 5 dbar surface have been computed for the hydrological cruises carried out in March, May and July 1973 and compared with the circulation patterns inferred from current measurements. The particular problems arising from the use of the dynamic method on the Romanian continental shelf under the conditions of unstable current regime and of particular temperature and salinity structure - due to the significant freshwater inflow and to the specific features of thermic processes in this region - are also analysed.